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The failover module provides a generic interface for paravirtual drivers to register a netdev and a set of ops with a failover instance. The ops are used as event handlers that get called to handle netdev register/ unregister/link change/name change events on slave pci ethernet devices with the same mac address as the failover netdev. This enables paravirtual drivers to use a VF as an accelerated low latency datapath. It also allows migration of VMs with direct attached VFs by failing over to the paravirtual datapath when the VF is unplugged. Signed-off-by: Sridhar Samudrala <sridhar.samudrala@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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639 B
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19 lines
639 B
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.. SPDX-License-Identifier: GPL-2.0
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========
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FAILOVER
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========
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Overview
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========
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The failover module provides a generic interface for paravirtual drivers
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to register a netdev and a set of ops with a failover instance. The ops
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are used as event handlers that get called to handle netdev register/
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unregister/link change/name change events on slave pci ethernet devices
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with the same mac address as the failover netdev.
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This enables paravirtual drivers to use a VF as an accelerated low latency
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datapath. It also allows live migration of VMs with direct attached VFs by
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failing over to the paravirtual datapath when the VF is unplugged.
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